Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 217
ng-Cap Casting to mold the square hole in the upright position shown at d. Thisheel core and the setting of it was an expense; there was always anunevenness at the surface of the casting caused by the heel of thecore, which had to be ground smooth. To avoid these objectionablefeatures, what is…
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
